Pre Teen Models Sites What Exactly Is Child Pornography?

What exactly is child pornography? - pre teen models sites

Lately, guys, I was in trouble when their women, children send naked pictures on their cell phones. When she entered a room and took his clothes, is in trouble for it? What's with teens and preteens on a nudist beach. As you can see, there is nothing wrong with that? I'm not in it, but I thought the question sexting everyone and everything I see online indicates that the image of a sexual nature must be. Does this mean that images of naked children on the beach or any child modeling legal online sites?
I am not a pedophile, and no pictures of children. I wonder about this issue and sexting especially lately, where to draw the line between a nude picture, art and pornography.